DKnight USB 3.0 4-Port Hub + 5V 1.5A Charging Port with 5V 2A Power Adapter Easily add 4 USB 3.0 SuperSpeed ports to your PC and enjoy data transfer rates of up to 5Gbps for faster sync times. Each port could act as a charging port (1.5A) offers enough current to charge either a smartphone or a tablet at high speed. Lightweight, "power-bar" design effectively saves space. Blue LED indicates USB 3.0 operation. Designed with a built-in surge protector to keep your devices safe. Supports hot swapping. No installation of drivers required for Windows XP / Vista / 7 / 8 or Mac OS X 10.2 and above. Package contents: Dknight 4-Port Charging Hub, 5V / 2A power adapter (with 3.3 ft cord), USB 3.0 cable (2.3 ft). Free lifetime technical support and 12-month manufacturer's warranty.